System for generating steam.



0. PERU, s8. SYSTEM FOR GENERATING STEAM. APPLICATION FILED AUG. 19, 1908.

Patented Oct. 19, 1909.

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onrr sr CHARLES FEED, $3., OF BAY CITY, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE-HALF TO IGNATIUS ANDRZEJENSKI, OF BAY CITY, MICHIGAN.

SYSTEM FOR ERATING STEAM.

Specification of Letters latent.

Patented Oct. 19, 1909.

Application filed August 19, 1908, Serial No. 449,359.

The object of the invention is the produc:

tion of a steam generating attachment for boilers comprising means for heating compressed air and conducting it through a steam generator and permitting it to systematically escape and thereby stimulate the generation of the steam within the generator and whereby a maximum amount of steam ifs produced with a minimum amount of In particular my invention contemplates certain improvements in the invention set forth in my United States Patent No. 779,538.

With this and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be described and particularly pointed out in the appended claim.

In the accompanying drawings: Figure 1 is a diagrammatic representation partly in section of a steam generator equipped with this invention, and, Fig. 2 is a vertical sectional view thereof.

In the drawings I have illustrated the preferred embodiment of my invention, but it is understood that the same may be ap plied to any form of steam generator it being especially designed for application to tubular steam boilers.

In the drawings 1 denotes a steam boiler provided with the usual number of horizontal fiues 2, a firebox 3, a smoke-stack 4, and an ash pit 5, to receive ashes from the furnace.

In steam boilers of the type illustrated, heat passes from the firebox through the flue or chamber 3 under the boiler to the back of the casing and is conducted by means of the fines 2 through the boiler and upwardly through the smoke-stack 4.

This improved attachment comprises a suitable air compressor (5 from which the compressed air 1s conducted through a conduit 6 and branch pipes 6* connected with said conduit to a plurality of cylindrical tanks '7' and S, which are preferably positioned lengthwise beneath the boiler 1, in the hot air chamber 3' to absorb heat from the passing gases and radiated heat from the boiler. The tanks 7 and 8 are adapted to ac- E cumulate air under high pressure and extend longitudinally of the lower part of the combustion chamber 3 and at their rear ends are connected to a bent discharge pipe 9 preferably made U-shaped, the bent portion of which extends through the rear wall of the boiler housing and is provided with a suitable valve 9. Theupper end or leg of the discharge pipe 9 is connected with a pipe 10, which extends lengthwise through the bottom of the boiler and is formed with a plurality of upwardly-facing openings 11. The

pipe 10 is" designed to discharge a portion of the heated compressed air in jets upwardlyinto the water in the boiler and said pipe or conduit 10 extends through the for ward end of the boiler and enters a heater 12 which is positioned in the smoke-stack 4 to receive heat from the products of combustion passing through said smoke-stack, and the compressed air conducted from the tank heaters 7 and 8 through the pipe 10 and which has become partly cooled passes into the heater 12 and is again heated and is conducted by a pipe 13 back to the boiler 1. The pipe 13 connects at its inner end with a perforated distributing pipe 141- which is coiled about and on the fiues 2. The pipe 14 is preferably constructed as shown of inverted U-shaped members connected at their lower ends by perforated pipes 14 and said pipes are perforated at equally spaced points to discharge air systematically into the Water in the boiler 1, the apertures in the upperoends of the inverted U-shaped members opening downwardly, those in the legs opening laterally and those in the connecting pipes 14' opening upwardly whereby the heated air is discharged in jets in all directions through the boiler whereby a maximum amount of steam is generated with a minimum consumption of fuel.

The upper portions of the inverted U- shaped members of the pipe 14 extend above the surface of the water of the boiler to receive the heat from the steam which occupies Fix . pressor from the steam dome 1.

the upper portion of the boiler. Said pipe 14 may be coiled around the fines 2 by being 2 wound around the outer fines or by being intertwisted with all the fines. It will be recognized that the temperature of the air distributed through the open end 15 of the pipe 14: compensates for the difference in amount between the volume of compressed air discharged through said open end and the volume of compressed air discharged through the perforations 11 in the bottom pipe 10 and further, as the perforations are regularly formed in the pipes 10 and 14; the heated compressed air will be systematically discharged into the boiler to effectively heat all of the water in said boiler. Should itbe desired, the pipe 14 may be made to extend directly through the center of the boiler without being wound around the outer fines.

The compressor 6 may be operated by any suitable means preferably by steam supplied through the pipe 1" leading to said com- By means of this improved auxiliary steam producing attachment an increased production of steam is economically secured and with various modifications my attachment may be applied to almost any steam generating plant.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the prini ciple or sacrificing any of the advantages of the invention as defined in the appended claim.

I claim as my invention.

An auxiliary steam generating attachment for steam boilers comprisii'lg a fluid receiving tank adapted for arrangement in a combustion chamber, means for supplying fluid thereto, a discharge pipe connected at one end to said tank. a perforated. pipe connected with the other end of said discharge pipe and of a length sutiicient to extend through oppssite ends of the boiler to which it is to be applied. a tank adapted to be arranged in the boiler smoke stack and connected to one end of said perforated pipe. the other end of said pipe being designed to project outside the boiler and provided with a valve for regulating the fluid supply,

a pipe leading from said smoke stack tank into the boiler bent to form connected inverted U-shaped members, the upper portion of said U-shaped members having downwardly opening perforations, the legs thereof having laterally opening perforations and the connecting members having up wardly opening perforations whereby the tluid is forced through the water in the boiler in all directions tofacilitate the rapid generation of steam.

in testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES FERO, SR.

Witnesses CURTIS E. PIERCE, NELLIE M. Dwvnn. 

